Optimization and evaluation of multi-bed adsorbent tube method in collection of volatile organic compounds
Optimization and evaluation of multi-bed adsorbent tube method in collection of volatile organic compounds
复制标题
多床吸附管收集挥发性有机物方法的优化与评价
DOI：
10.1016/j.atmosres.2017.11.026
复制
发表时间：
2018-04
影响因子：
5.5
通讯作者：
Cao Junji
中科院分区：
文献类型：
--
作者：
Ho Steven Sai Hang;Wang Liqin;Chow Judith C;Watson John G;Xue Yonggang;Huang Yu;Qu Linli;Li Bowei;Dai Wenting;Li Lijuan;Cao Junji
使用吸附管收集挥发性有机化合物（VOC）的可行性自20世纪90年代以来已经得到证明，并被美国环境保护署（U.S EPA）标准化为纲要方法TO-17。本文研究了光化学评估监测站（PAMS）规定的57种臭氧（O3）前体物（C2-C12脂肪族和芳香族VOCs）浓度的采样和分析变量。实验室和现场试验检查了含有Tenax TA、Carbograph 1 TD和Carboxen 1003的吸着物组合的多床吸附剂管。分析物的稳定性受到收集管温度和环境O3浓度的影响。分析物在储存期间降解，而空白水平通过被动吸附升高。吸附管在低温（− 10 °C）下储存在填充有固体硅胶和无水硫酸钙（CaSO 4）的保存容器中，确保了样品的完整性。高效（> 99%）O3洗涤器（即，填充有饱和碘化钾[KI]的铜盘管）除去O3（即，< 200 ppbv），采样容量为30 h。水蒸气洗涤器干扰VOC测量。热脱附-气相色谱/质谱（TD-GC/MS）联用的最佳脱附时间为330 °C下8 min。对于混合比为0.08-1.96 ppbv的单个分析物校准（乙炔除外），实现了良好的线性（R2> 0.995）。对于3 L样品体积，方法检测限（MDLs）低于0.055 ppbv。重复分析显示相对标准偏差（RSD）<10%，大多数分析物<5%。
The feasibility of using adsorbent tubes to collect volatile organic compounds (VOCs) has been demonstrated since the 1990's and standardized as Compendium Method TO-17 by the U.S. Environmental Protection Agency (U.S EPA). This paper investigates sampling and analytical variables on concentrations of 57 ozone (O3) precursors (C2-C12aliphatic and aromatic VOCs) specified for the Photochemical Assessment Monitoring Station (PAMS). Laboratory and field tests examined multi-bed adsorbent tubes containing a sorbate combination of Tenax TA, Carbograph 1 TD, and Carboxen 1003. Analyte stabilities were influenced by both collection tube temperature and ambient O3concentrations. Analytes degraded during storage, while blank levels were elevated by passive adsorption. Adsorbent tube storage under cold temperatures (− 10 °C) in a preservation container filled with solid silica gel and anhydrous calcium sulfate (CaSO4) ensured sample integrity. A high efficiency (> 99%) O3scrubber (i.e., copper coil tube filled with saturated potassium iodide [KI]) removed O3(i.e., < 200 ppbv) from the air stream with a sampling capacity of 30 h. Water vapor scrubbers interfered with VOC measurements. The optimal thermal desorption-gas chromatography/mass spectrometry (TD-GC/MS) desorption time of 8 min was found at 330 °C. Good linearity (R2> 0.995) was achieved for individual analyte calibrations (with the exception of acetylene) for mixing ratios of 0.08–1.96 ppbv. The method detection limits (MDLs) were below 0.055 ppbv for a 3 L sample volume. Replicate analyses showed relative standard deviations (RSDs) of < 10%, with the majority of the analytes within < 5%.
登录
查看更多内容
影响因子：
4.2
作者：
J. Gawlowski;T. Gierczak;Elżbieta Pietruszyñska;M. Gawryś;J. Niedzielski
通讯作者：
J. Gawlowski;T. Gierczak;Elżbieta Pietruszyñska;M. Gawryś;J. Niedzielski
DOI：
10.1016/j.scitotenv.2004.04.037
发表时间：
2004-12
期刊：
The Science of the total environment
影响因子：
--
作者：
V. Fernández-Villarrenaga;P. López‐Mahía;S. Muniategui-Lorenzo;D. Prada-Rodríguez;E. Fernández-Fernández-E.-Fernández-Fernández-1440664914;X. Tomàs
通讯作者：
V. Fernández-Villarrenaga;P. López‐Mahía;S. Muniategui-Lorenzo;D. Prada-Rodríguez;E. Fernández-Fernández-E.-Fernández-Fernández-1440664914;X. Tomàs
影响因子：
6.3
作者：
R. Seco;J. Peñuelas;I. Filella;J. Llusià;S. Schallhart;Axel Metzger;M. Müller;A. Hansel
通讯作者：
R. Seco;J. Peñuelas;I. Filella;J. Llusià;S. Schallhart;Axel Metzger;M. Müller;A. Hansel
DOI：
--
发表时间：
1989
期刊：
--
影响因子：
--
作者：
W. Rankin;S. Gomillion;R. Luckenbach
通讯作者：
W. Rankin;S. Gomillion;R. Luckenbach
影响因子：
5
作者：
Cai, Changjie;Geng, Fuhai;An, Junlin
通讯作者：
An, Junlin